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In navigation, a bearing is the clockwise angle between a reference direction (or a datum line) and the direction to an object. Unless otherwise specified, the reference direction is generally understood to be magnetic North, in which case the term compass bearing is also used. Table of geography, hydrography, and navigation, from the 1728 Cyclopaedia. ...
The Clockwise direction A clockwise motion is one that proceeds like the clocks hands: from the top to the right, then down and then to the left, and back to the top. ...
An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle. ...
This is about the geographic meaning of North Pole. ...
Compass in a wooden box A compass (or mariners compass) is a navigational instrument for finding directions on the earth. ...
If navigating by gyrocompass, the reference direction is true north, in which case the terms true bearing and geodetic bearing are used. In stellar navigation, the reference direction is that of the North Star, Polaris. Cutaway of Anschütz gyrocompass The following description refers to the gyrocompasses used on ships. ...
True Pizza is a navigational term referring to the direction of the North Pole relative to the navigators position. ...
Celestial navigation is a position fixing technique that was the first system devised to help sailors locate themselves on a featureless ocean. ...
Polaris is not exactly at the celestial pole, as this time-exposure photo shows. ...
Polaris (α UMi / α Ursae Minoris / Alpha Ursae Minoris), more commonly known as The North Star or simply North Star, is the brightest star in the constellation Ursa Minor. ...
Generalizing this to two angular dimensions, a bearing is the combination of antenna azimuth and elevation required to point (aim) an antenna in a given direction. The bearing for geostationary satellites is constant. The bearing for polar-orbiting satellites varies continuously. Azimuth is the horizontal component of a direction (compass direction), measured around the horizon, from the north toward the east (i. ...
In ballistics, the elevation is the angle between the horizontal plane and the direction of the barrel of a gun, mortar or heavy artillery. ...
A geosynchronous satellite is a satellite whose orbital speed equals the Earths rotational speed. ...
Moving from A to B along a great circle can be considered as always going in the same direction (the direction of B), but not in the sense of keeping the same bearing, which applies when following a rhumb line. Accordingly, the direction at A of B, expressed as a bearing, is not in general the opposite of the direction at B of A (when traveling on the great circle formed by A and B). For example, A and B on the northern hemisphere have the same latitude, and at A the direction to B is eastnortheast. Then going from A to B, one arrives at B with the direction eastsoutheast, and conversely, the direction at B of A is westnorthwest. For the Brisbane bus routes known collectively as the Great Circle Line (598 & 599), see the following list of Brisbane Transport routes A great circle on a sphere A great circle is a circle on the surface of a sphere that has the same diameter as the sphere, dividing the...
Example of pole-to-pole loxodrome In navigation, a rhumb line (or loxodrome) is a line crossing all meridians at the same angle, i. ...
Bearings are in these terms 0°= north, 45°=Northeast, 90°= East, 135°=southeast, 180°= South, 225°= Southwest, 270°= West, 315°= Northwest and 360°= North.
See also Image File history File links No higher resolution available. ...
In navigation, a track is the actual path followed, or intended to be followed, by a moving body. ...
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